'What is causing this weird ERR_CONNECTION_RESET?

The browser makes a post request with a binary file,then fails and gets this error,when I change a file request it succeed.

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On the server side, I got this exception:

Microsoft.AspNetCore.Connections.ConnectionResetException: The client has disconnected ---> System.Runtime.InteropServices.COMException (0x80070040): 指定的网络名不再可用。 (0x80070040)

A direct request on the server can be successful！So I think it must be a network matter, I turned off the firewall of the server，but it didn't work.

Is there anything else in the middle of client and server application can intercept request？

There is No proxy and request by ip:port.

There is a security service called '360虚拟化' on the server which can not be stopped or removed. Is this disgusting software doing it?

javascriptc++sharpnetworking


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